Pros
Fantastic experience for new grads, and one of the few companies where little to no experience is no reason not to get a call for an interview. If sales or business is something that you would consider going into as a career, give Meltwater a shot because it has the ability to teach you how a sales organization can be run and gives you the ability to learn some basic sales process methodology in a fun and fast paced environment.
Cons
If you read the above and think of "fast paced" as anything less than making phone calls every minute of every day (upwards of 200-300+ in some cases), than think again. Meltwater is an extremely high-pressure environment with some of the most aggressive monthly sales quotas ever conceived. New people beware: the companies most likely to purchase the product you are selling either already have it, or can only be sold to by Meltwater veterans who have been around long enough to have earned the right, or as is most often the case, been lucky enough to have leads distributed to them from the most recent person to leave.